The personal realization that physics is fun and addicting began with a chain of accidental discoveries: discovery of physics as a non-academic profession, discovery of engineering physics, discovery of solid state and gaseous electronics, discovery of the management trap, and discovery of independent free-enterprise startups. Then the odyssey as a physics entrepreneur began. How easily a creative core of physicists formed an independent center of excellence doing what is fun in physics, but generating spin-off technologies and companies in the process, will be described along with the rules and strategies that perpetuated the fun for 25 years (plus 10 more years to date).